return to home page Computational Chemistry Comparison and Benchmark DataBase Release 22 (May 2022) Standard Reference Database 101 National Institute of Standards and Technology
You are here: Calculated > Energy > Optimized > Energy

All results from a given calculation for CH2CClCH2CH3 (1-Butene, 2-chloro-)

using model chemistry: MP2/6-31+G**

19 10 17 12 22

States and conformations

State Conformation minimum conformation conformer description state description
1 1 yes CS 1A'
Energy calculated at MP2/6-31+G**
 hartrees
Energy at 0K-615.722062
Energy at 298.15K-615.729342
HF Energy-615.022950
Nuclear repulsion energy212.679374
The energy at 298.15K was derived from the energy at 0K and an integrated heat capacity that used the calculated vibrational frequencies.
Vibrational Frequencies calculated at MP2/6-31+G**
Mode Number Symmetry Frequency
(cm-1)
Scaled Frequency
(cm-1)
IR Intensities
(km mol-1)
Raman Act
4/u)
Dep P Dep U
1 A' 3362 3162 1.72      
2 A' 3258 3064 0.32      
3 A' 3220 3029 20.50      
4 A' 3124 2939 20.97      
5 A' 3117 2932 12.54      
6 A' 1710 1608 36.06      
7 A' 1555 1462 5.01      
8 A' 1521 1431 6.56      
9 A' 1469 1382 2.32      
10 A' 1451 1365 2.60      
11 A' 1411 1327 8.64      
12 A' 1188 1118 57.30      
13 A' 1106 1041 2.74      
14 A' 1050 987 2.61      
15 A' 903 849 8.77      
16 A' 707 665 24.20      
17 A' 436 410 0.87      
18 A' 370 348 2.17      
19 A' 261 245 0.32      
20 A" 3222 3031 23.38      
21 A" 3163 2975 4.92      
22 A" 1540 1448 8.18      
23 A" 1311 1233 1.03      
24 A" 1136 1068 1.90      
25 A" 859 808 54.38      
26 A" 821 772 0.56      
27 A" 704 662 0.01      
28 A" 412 388 6.50      
29 A" 263 248 0.19      
30 A" 84 79 0.47      

Unscaled Zero Point Vibrational Energy (zpe) 22365.5 cm-1
Scaled (by 0.9406) Zero Point Vibrational Energy (zpe) 21037.0 cm-1
See section III.C.1 List or set vibrational scaling factors to change the scale factors used here.
See section III.C.2 Calculate a vibrational scaling factor for a given set of molecules to determine the least squares best scaling factor.
Rotational Constants (cm-1) from geometry optimized at MP2/6-31+G**
ABC
0.26956 0.07946 0.06279

See section I.F.4 to change rotational constant units
Geometric Data calculated at MP2/6-31+G**

Point Group is Cs

Cartesians (Å)
Atom x (Å) y (Å) z (Å)
C1 2.088 -1.151 0.000
H2 2.413 -2.190 0.000
H3 2.503 -0.668 0.884
H4 2.503 -0.668 -0.884
C5 0.565 -1.087 0.000
H6 0.169 -1.612 -0.873
H7 0.169 -1.612 0.873
C8 0.686 1.454 0.000
H9 1.765 1.441 0.000
C10 0.000 0.303 0.000
Cl11 -1.749 0.340 0.000
H12 0.184 2.410 0.000

Atom - Atom Distances (Å)
  C1 H2 H3 H4 C5 H6 H7 C8 H9 C10 Cl11 H12
C11.08941.08961.08961.52372.15802.15802.95772.61192.54404.11634.0371
H21.08941.76261.76262.15202.47652.47654.03263.68893.47004.87115.1114
H31.08961.76261.76812.17103.07062.51822.93032.40332.82694.45893.9536
H41.08961.76261.76812.17102.51823.07062.93032.40332.82694.45893.9536
C51.52372.15202.17102.17101.09321.09322.54382.79881.50112.71923.5176
H62.15802.47653.07062.51821.09321.74613.22953.55452.11202.87284.1156
H72.15802.47652.51823.07061.09321.74613.22953.55452.11202.87284.1156
C82.95774.03262.93032.93032.54383.22953.22951.07941.33932.67761.0795
H92.61193.68892.40332.40332.79883.55453.55451.07942.10013.68291.8538
C102.54403.47002.82692.82691.50112.11202.11201.33932.10011.74972.1144
Cl114.11634.87114.45894.45892.71922.87282.87282.67763.68291.74972.8323
H124.03715.11143.95363.95363.51764.11564.11561.07951.85382.11442.8323

picture of 1-Butene, 2-chloro- state 1 conformation 1
More geometry information
Calculated Bond Angles
atom1 atom2 atom3 angle atom1 atom2 atom3 angle
C1 C5 H6 110.018 C1 C5 H7 110.018
C1 C5 C10 114.506 H2 C1 H3 107.981
H2 C1 H4 107.981 H2 C1 C5 109.769
H3 C1 H4 108.459 H3 C1 C5 111.266
H4 C1 C5 111.266 C5 C10 C8 127.079
C5 C10 Cl11 113.323 H6 C5 H7 105.999
H6 C5 C10 107.963 H7 C5 C10 107.963
C8 C10 Cl11 119.597 H9 C8 C10 120.140
H9 C8 H12 118.340 C10 C8 H12 121.520
Electronic energy levels

Electronic state

Charges, Dipole, Quadrupole and Polarizability